Lemon emulsion, a concentrated flavoring used mainly in baking and cooking for imparting a vibrant lemon flavor without the acidity of lemon juice, can be found at various places. Specialty grocery stores and baking supply shops often carry a variety of flavor emulsions, including lemon. Additionally, numerous online retailers, such as Amazon, eBay, and specific food and baking specialty websites, offer a broad selection of lemon emulsion brands. When purchasing, consider the quality and the ingredients to ensure it meets your needs, especially if you're seeking a natural flavoring or have dietary restrictions. Reading reviews can also help you choose a product that has been well-received by other customers.

Yarn painting is a fascinating craft that involves applying colored yarns to a surface to create intricate designs. This art form has roots in the Huichol culture of Mexico, where it's used for spiritual and decorative purposes. To start yarn painting, you'll need a piece of cardboard or wood as your canvas, yarn in various colors, and adhesive (white glue or beeswax are common choices). Begin by sketching your design on the surface. Then, apply the adhesive to a small section of your design. Press the end of a yarn strand into the adhesive, following your design outline and filling in the shapes with color as you go. Use a toothpick or a small tool to carefully adjust the yarn and ensure it's well-pressed into the adhesive. Work in sections until your design is completely filled in. This activity not only enhances creativity but also requires patience and precision, making it a rewarding challenge.

The question as stated seems to contain a logical contradiction because it implies looking for a polymer that does not possess the very definition of what it is. By definition, a polymer is a large molecule, or macromolecule, composed of many repeated subunits (monomers). Therefore, every polymer by its nature has a polymeric structure. The question might be misphrased or might be asking about monomers or small molecules that do not form polymers. Monomers can exist independently without forming polymers, but once they undergo polymerization, they become part of a polymer. If the query is aimed towards materials that do not form polymers, examples could include simple molecules like water or gases like oxygen and nitrogen under standard conditions, as they do not polymerize but exist as discrete molecules.